The BioWare Blog has a post from BioWare co-founder Dr. Ray Muzyka confirming that criticism of the ending of Mass Effect 3 has had a massive effect on them, and they will indeed be changing the way the game ends, as they said they might. Here's a bit on their change in plans, and what lead to this point:

Building on their research, Exec Producer Casey Hudson and the team are hard at work on a number of game content initiatives that will help answer the questions, providing more clarity for those seeking further closure to their journey. You’ll hear more on this in April. We’re working hard to maintain the right balance between the artistic integrity of the original story while addressing the fan feedback we’ve received. This is in addition to our existing plan to continue providing new Mass Effect content and new full games, so rest assured that your journey in the Mass Effect universe can, and will, continue.

The reaction to the release of Mass Effect 3 has been unprecedented. On one hand, some of our loyal fans are passionately expressing their displeasure about how their game concluded; we care about this feedback, and we’re planning to directly address it. However, most folks appear to agree that the game as a whole is exceptional, with more than 75 critics giving it a perfect review score and a review average in the mid-90s. Net, I’m proud of the team, but we can and must always strive to do better.

“There are many different endings. We wouldn’t do it any other way. How could you go through all three campaigns playing as your Shepard and then be forced into a bespoke ending that everyone gets? But I can’t say any more than that…”

“Every decision you've made will impact how things go. The player's also the architect of what happens."

Whether you're happy or angry at the ending, know this: it is an ending.BioWare will not do a "Lost" and leave fans with more questions thananswers after finishing the game, Gamble promised.

“You'll get answers to everything. That was one of the key things. Regardless of how we did everything, we had to say, yes, we're going to provide some answers to these people.”

“Because a lot of these plot threads are concluding and because it's being brought to a finale, since you were a part of architecting how they got to how they were, you will definitely sense how they close was because of the decisions you made and because of the decisions you didn't make”

“For people who are invested in these characters and the back-story of the universe and everything, all of these things come to a resolution in Mass Effect 3. And they are resolved in a way that's very different based on what you would do in those situations.”

“Fans want to make sure that they see things resolved, they want to get some closure, a great ending. I think they’re going to get that.”

“Mass Effect 3 is all about answering all the biggest questions in the lore, learning about the mysteries and the Protheans and the Reapers, being able to decide for yourself how all of these things come to an end.”

Interviewer: “So are you guys the creators or the stewards of the franchise?”

Hudson: “Um… You know, at this point, I think we’re co-creators with the fans. We use a lot of feedback.”

Interviewer: [Regarding the numerous possible endings of Mass Effect 2] “Is that same type of complexity built into the ending of Mass Effect 3?”

Hudson: “Yeah, and I’d say much more so, because we have the ability to build the endings out in a way that we don’t have to worry about eventually tying them back together somewhere. This story arc is coming to an end with this game. That means the endings can be a lot more different. At this point we’re taking into account so many decisions that you’ve made as a player and reflecting a lot of that stuff. It’s not even in any way like the traditional game endings, where you can say how many endings there are or whether you got ending A, B, or C.....The endings have a lot more sophistication and variety in them.”

“We have a rule in our franchise that there is no canon. You as a player decide what your story is.”

Mass Effect 3 will shake up the player's moral choices more than ever before, even going so far as allowing the Reapers to win the battle for Earth, according to BioWare's community representative Mike Gamble.

"Of course you don’t have to play multiplayer, you can choose to play all the side-quests in single-player and do all that stuff you’ll still get all the same endings and same information, it’s just a totally different way of playing"

“The whole idea of Mass Effect3 is resolving all of the biggest questions, about the Protheons and the Reapers, and being in the driver's seat to end the galaxy and all of these big plot lines, to decide what civilizations are going to live or die: All of these things are answered in Mass Effect 3.”

“There is a huge set of consequences that start stacking up as you approach the end-game. And even in terms of the ending itself, it continues to break down to some very large decisions. So it's not like a classic game ending where everything is linear and you make a choice between a few things - it really does layer in many, many different choices, up to the final moments, where it's going to be different for everyone who plays it.”

Yeah, you know. Some people might choose blue, and they get a blue ball! And some might choose the light beam, and they get a green ball! And then there's the red crowd, and they get a red ball!

And of course, LOTS OF SPECULATION FROM EVERYBODY!

(BioWare will not do a "Lost" and leave fans with more questions than answers after finishing the game, Gamble promised. “You'll get answers to everything. That was one of the key things. Regardless of how we did everything, we had to say, yes, we're going to provide some answers to these people.”)